/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.transforms.windowing;



/**

 * Exception thrown by {@link WindowFn#verifyCompatibility(WindowFn)} if two compared WindowFns are

 * not compatible, including the explanation of incompatibility.

 */

public class IncompatibleWindowException extends Exception {

  private WindowFn<?, ?> givenWindowFn;

  private String reason;



  public IncompatibleWindowException(WindowFn<?, ?> windowFn, String reason) {

    this.givenWindowFn = windowFn;

    this.reason = reason;

  }



  @Override

  public String getMessage() {

    String windowFn = givenWindowFn.getClass().getSimpleName();

    return String.format("The given WindowFn is %s. %s", windowFn, reason);

  }

}